NEED: Prius LED ECU Delete Harness

Discussion in 'Gen 3 Prius Accessories and Modifications' started by Mark Zurawski, Apr 7, 2026 at 10:22 PM.

  1. Mark Zurawski

    Mark Zurawski New Member

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    Vehicle:
    2011 Prius
    Model:
    Five
    Does anyone know where I could find an LED ECU delete / LED-to-Halogen bypass harnesses for the 2010-2011 Prius Five? Copilot AI says the following PriusChat users have made and/or sold quality solutions on PriusChat: @sfv41901 and @seanw
     
    #1 Mark Zurawski, Apr 7, 2026 at 10:22 PM
  2. PriusCamper

    PriusCamper Senior Member

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    Are you talking about headlights? If so, I'm pretty sure there's direct swap LED bulbs these days and no need for ECU delete harness. Maybe @Mendel Leisk has more info?

    Also, there's way more accurate AI services than Co-pilot, which is almost bad as the worst, which is Google AI, also known as Gemini.
     
    #2 PriusCamper, Apr 8, 2026 at 4:37 PM
  3. ChapmanF

    ChapmanF Senior Member

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    I was almost about to guess that the OP had a Prius that came with the factory LED-integrated headlight housings, and wants to replace them with the halogen projector housings, and do away with the auto-leveling motors and ECUs and somehow not get the associated trouble codes.
     
    #3 ChapmanF, Apr 8, 2026 at 5:58 PM
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  4. PriusCamper

    PriusCamper Senior Member

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    Now that you mention it... I guess they could be saying that. I didn't consider that someone would be crazy enough to go back in time and go from superior to inferior.
     
    #4 PriusCamper, Apr 8, 2026 at 7:52 PM
  5. ChapmanF

    ChapmanF Senior Member

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    IV
    Maybe they took some damage to their original LED-integrated headlight housings, and then priced them.
     
    #5 ChapmanF, Apr 8, 2026 at 8:11 PM
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  6. Mark Zurawski

    Mark Zurawski New Member

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    Location:
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    Vehicle:
    2011 Prius
    Model:
    Five
    Yes, the factory housings were damaged and I replaced the factory LED system with a lesser-quality LED housings to save a ton of money because I have 4 separate 2010-2013 Prius models in my driveways for my children (to smash-n-crash).

    The 2011 Prius Five in question originally had: #1) A dedicated LED Headlight ECU mounted to the factory housings; #2) A 6-pin triangular control connector, which I spliced around; #3) An auto-leveling motor inside each factory headlight, and #4) A rear height leveling sensor that feeds leveling data to the factory LED Headlight ECU that I removed to install the new aftermarket LED headlight system.

    According to the inferior AI Tool, Copilot, (lol) when any of the above are missing, the car throws three associated codes and displays "Check Headlight System" on the dash and the only known fix is an LED-to-Halogen Conversion Bypass Harness (also called the LED ECU Delete Harness, amongst several other “names”).
     
    #6 Mark Zurawski, Apr 8, 2026 at 8:57 PM
  7. Mendel Leisk

    Mendel Leisk MMX GEN III

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    Touring
    Nope. Just the expression causes dismay and bewilderment:
     
    #7 Mendel Leisk, Apr 9, 2026 at 2:49 PM
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